PLEASE HELP ME WITH THSE QUESTIONS I WILL MARK BRAINLIEST IF ITS RIGHT..

Aladder that is 30 ft long needs to reach 27 ft up a building. what should the angle of the vertical be?

The conversion factor relating feet to meters is 1 ft=0.305 m. keep in mind that when using conversion factors, you want to make sure that like units cancel leaving you with the units you need. you have been told that a certain house is 164 m2 in area. how much is this in square feet?

Find the domain of the following expression: 1/(√x)-2